I've had dogs all my life and trained them well. My current golden is the most stubborn, strong willed dog I have ever met, nothing like a typical golden. And when forced to do as told, she borders on aggression. She's already passed her CGC, so she knows hows to do an amazing amount of things, but she is a wild, crazed jumping, nipping beast when anyone comes to the house, or whenever she wants to be. If she had found her way into a home where someone didn't know or have dogs before, she would spend her life in a kennel or be given up for adoption. She's as smart as any dog I've ever had, but truly possessed at times. Are there acupressure points that may calm her? Are there tests to check for thyroid issues that may effect her? I'm almost at the point of getting an electrical collar for control when she goes crazy. Help?